<article id="doc-back_cover">
    <div class="wrapper"></div>
    {%- set target_url = site_url or repo_url -%}
    {% if target_url is defined -%}
    <div class="wrapper">
        <div>{{ target_url }}</div>
    {%- endif %}
    </div>
    <div class="wrapper"></div>
</article>
